I am experiencing a similar situation. It is ongoing (have now involved relevant government authority for investigation) so I will not reveal too much information at this point.
Even though I have not associated for a number of years I have always remained on good terms with my family (although they are disappointed at my choice to not associate) and any other JW's I interact with - not DF/DA'd. Things have now changed drastically and it is all due to money - my mother's.
While having read lots of information on this site over the years relating to unethical behaviour by elders, what I have experienced during the last few months has left me reeling. I would never have thought they could be so blatant in their attempt to secure the funds they feel they are entitled to - and I'm not easily shocked nor prone to exaggeration:-)
I have also seen first hand how all encompassing mind control is.
When I first contacted the relevant authority and outlined the situation, the government officer asked me which church this involved...when I said JW's she said "that would have been my first guess". I'm not sure how effective the government department will be (although they said there are red flags all over this), but after this has been dealt with I will post the story as I believe it may be a growing trend - as old loyal JW's pass away their assets will become easy pickings.
**JWfacts - as you mentioned that you will soon face a situation similar to the OP you may be interested in this situation as it involves people you would be familiar with.